import time
import unittest


class DemoCase(unittest.TestCase):
    @classmethod
    def setUp(cls) -> None:
        print('开始')

    @classmethod
    def tearDown(cls) -> None:
        print('结束')



    def test_my(self):
        print('i am lily')


    def test_demo(self):
        print("执行的方法")


if __name__ == '__main__':
    unittest.main()
